Finding the Fourth Proportional to 51,178.83, 70,631.98 and 28,521.51

Step by Step Solution

1. Step 1: Write the proportion equation
   51,178.83 : 70,631.98 = 28,521.51 : x
2. Step 2: Convert to fraction form
   51,178.83/70,631.98 = 28,521.51/x
3. Step 3: Cross multiply
   51,178.83x = 70,631.98 × 28,521.51
4. Step 4: Simplify right side
   51,178.83x = 2,014,530,723.89
5. Step 5: Solve for x
   x = 2,014,530,723.89/51,178.83
6. Step 6: Final answer
   x = 39,362.58